definition of rock grain

  • Grain | Definition of Grain by Merriam-Webster

    grain: [noun] a single small hard seed. a seed or fruit of a cereal grass : caryopsis. the seeds or fruits of various food plants including the cereal grasses and in commercial and statutory usage other plants (such as the soybean). plants producing grain.

  • Grain | rock texture | Britannica

    Other articles where Grain is discussed: rock: Texture: …shape, and arrangement of the grains (for sedimentary rocks) or crystals (for igneous and metamorphic rocks). Also of importance are the rock’s extent of homogeneity (i.e., uniformity of composition throughout) and the degree of isotropy. The latter is the extent to which the bulk structure and composition are the same…

  • Grain | Definition of Grain at Dictionary

    Nov 30, 2014· Grain definition, a small, hard seed, especially the seed of a food plant such as wheat, corn, rye, oats, rice, or millet. See more.

  • Grain size - Wikipedia

    Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks.The term may also be applied to other granular materials.This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain. A single grain can be composed of several crystals. ...

  • What are the grains of a rock - Answers

    Grain refers to the mineral particle sizes that make up the rock. The grain may be sand grains in sandstone, feldspar crystals in granite, or clay particles in mudstone.

  • Grain - definition of grain by The Free Dictionary

    Define grain. grain synonyms, grain pronunciation, grain translation, English dictionary definition of grain. n. 1. a. A small, dry, one-seeded fruit of a cereal grass, having the fruit and the seed walls united: a single grain of wheat; gleaned the grains from the...

  • Sedimentary rock - Grain size | Britannica

    Sedimentary rock - Sedimentary rock - Grain size: Particle size is an important textural parameter of clastic rocks because it supplies information on the conditions of transportation, sorting, and deposition of the sediment and provides some clues to the history of events that occurred at the depositional site prior to final induration.

  • Grained | Definition of Grained at Dictionary

    Grained definition, having, reduced to, consisting of, or bearing grain or grains (usually used in combination): fine-grained sand; large-grained rice. See more.

  • definition of rock grain - kupidowoonwinkel.nl

    Rock density and porosity - PetroWiki Know More. Rock density and porosity , this definition of density is straightforward , density can be easily calculated if the mineral or grain density is known...

  • Sediment Grain Size Chart for Rocks

    Jun 20, 2019· The grain sizes of sediments and sedimentary rocks are a matter of great interest to geologists. Different size sediment grains form different types of rocks and can reveal information about the landform and environment of an area from millions of years prior.

  • definition of rock grain - shibang-china

    Rocks with no visible grain - Answers, How is a grain of sand turned into a rock? A grain of sand is transported by wind, ice or water and then deposited and buried along with many other grains of sand, ... Go to Product Center. Basalt: Igneous Rock - Pictures, Definition, Uses & More, What is Basalt?

  • definition of rock grain - rijschoolpremiere.nl

    definition of rock grain - shibang-china. Rocks with no visible grain - Answers, How is a grain of sand turned into a rock? A grain of sand is transported by wind, ice or water and then deposited and buried along with many other grains of sand, , Go to Product Center Basalt: Igneous Rock - Pictures, Definition, Uses & More, What is Basalt?

  • Fine-grained - definition of fine-grained by The Free ...

    Define fine-grained. fine-grained synonyms, fine-grained pronunciation, fine-grained translation, English dictionary definition of fine-grained. adj. 1. Having a fine, smooth, even grain: fine-grained …

  • Medium Grained Rocks | List of Medium Grained Rocks

    List of Medium Grained Rocks. Check out the List of Medium Grained Rocks here. Grain Size refers to the diameter of individual grains of sediments or lithified particles in clastic rocks. Medium grained rocks are generally between 0.1 to 2 mm in diameter. A single grain can be composed of …

  • What is coarse grained and fine grained rock - Answers

    Fine grained rock exhibits a non-visible or nearly non-visible crystalline structure on a fractured surface. On the opposite end, a coarse grained rock exhibits mineral crystals of the rock's ...

  • What does grain size mean? - Definitions

    Definition of grain size in the Definitions dictionary. Meaning of grain size. What does grain size mean? Information and translations of grain size in the most comprehensive dictionary definitions resource on the web.

  • Texture (geology) - Wikipedia

    Texture (or rock microstructure) in geology refers to the relationship between the materials of which a rock is composed. The broadest textural classes are crystalline (in which the components are intergrown and interlocking crystals), fragmental (in which there is an accumulation of fragments by some physical process), aphanitic (in which crystals are not visible to the unaided eye), and ...

  • Grain definition and meaning | Collins English Dictionary

    Grain definition: A grain of wheat, rice , or other cereal crop is a seed from it. | Meaning, pronunciation, translations and examples

  • Grain dictionary definition | grain defined

    grain definition: The definition of a grain is a tiny hard seed from a cereal grass, or a tiny piece of amount of something. (noun) An example of a grain is a piece of a wheat berry. An example of a grain is an extremely tiny piece of sand. ...

  • what is the meaning of mineral "grains"? | Yahoo Answers

    Apr 09, 2011· The term "grain" means something very specific in the context of materials composed of minerals. By definition, minerals are crystalline. To be crystalline means the constituent atoms are arranged in a regular and repeating manner that can be described as a lattice.

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  • Fine Grained Rocks | List of Fine Grained Rocks

    A single grain can be composed of several crystals. Fine grained rocks are generally less than 0.1 mm in diameter. You can also know about Coarse Grained Rocks and Medium Grained Rocks. All types of Fine Grained Rocks + have a variety of uses and many unknown and interesting facts. Get more information about main rocks like Slate, Limestone ...

  • Density of Rocks and Soils - Chemistry LibreTexts

    The bulk densities are given for sedimentary rocks as well as soils, because sedimentary rocks typically have variable porosity. Bulk density includes both the grains and the interstitial spaces. The grain density is the actual density of the particles, which might be a mineral.

  • Rock density and porosity - PetroWiki

    For rocks without sensitive minerals such as smectites, the porosity and dry, grain, and saturated densities can be derived from the saturated mass, dry mass, and volume (or buoyant weight). These measurements allow calculation of saturated, dry, and grain density as well as porosity and mineral and pore volume by employing Eqs. 3 through 5.

  • What does grain size mean? - Definitions

    Definition of grain size in the Definitions dictionary. Meaning of grain size. What does grain size mean? Information and translations of grain size in the most comprehensive dictionary definitions resource on the web.

  • Fine Grained Rocks | List of Fine Grained Rocks

    A single grain can be composed of several crystals. Fine grained rocks are generally less than 0.1 mm in diameter. You can also know about Coarse Grained Rocks and Medium Grained Rocks. All types of Fine Grained Rocks + have a variety of uses and many unknown and interesting facts. Get more information about main rocks like Slate, Limestone ...

  • Texture and Structure of Rocks | Article about Texture and ...

    Texture and Structure of Rocks the nature of the makeup of rocks from minerals and mineral aggregates. Texture is determined by the dimensions, shape, and interrelationships of the minerals; structure depends on the general features and spatial arrangement of the larger components of the rock (mineral aggregates). Texture and structure of igneous rocks ...

  • grain size, igneous rocks | Encyclopedia

    grain size, igneous rocks Arbitrarily defined limits for the sizes of crystals within an igneous rock. Commonly accepted grain-size ranges are: Very coarse>3 cmCoarse5 mm to 3 cmMedium Source for information on grain size, igneous rocks: A Dictionary of Earth Sciences dictionary.

  • Granite: Igneous Rock - Pictures, Definition & More

    Granites and rhyolites (compositionally equivalent to granite but of a fine grain size) are composed mainly of orthoclase feldspar, quartz, plagioclase feldspar, mica, and amphibole. B) Petrologist's Definition. Granite is a plutonic rock in which quartz makes up between 10 and 50 percent of the felsic components and alkali feldspar accounts ...

  • Rocks: Student Study Guidelines: 8th Grade Earth Science ...

    Define Grain size. the size of a grain. define grain shape. the shape of a grain. ... definition of intrusive igneous rock. ... Rocks: Student Study Guidelines: 8th Grade Earth Science 47 Terms. lisabrant19. Ch. 10 Vocab & Review - Science 56 Terms. Kailey_Marks4. Rocks 49 Terms. byuin2020.

  • Grain | Definition of Grain by Lexico

    ‘Later, other tectonic events created a series of fractures that cut across the grain of the gneiss.’ ‘When cutting rocks is that most sedimentary rock will cut easier when you follow the grain in the rock.’ ‘When did you last trace the grain in a piece of wood, sing a song, or just hold someone's hand?’

  • Grain size, igneous rocks - Oxford Reference

    Arbitrarily defined limits for the sizes of crystals within an igneous rock. Commonly accepted grain-size ranges are:For sedimentary rocks, see particle size.Very coarse>3 cmCoarse5 mm to 3 cmMedium1–5 mmFine<1 mmGlassyno grains present

  • Density of Rocks and Soils - Chemistry LibreTexts

    The bulk densities are given for sedimentary rocks as well as soils, because sedimentary rocks typically have variable porosity. Bulk density includes both the grains and the interstitial spaces. The grain density is the actual density of the particles, which might be a mineral.

  • Rock density and porosity - PetroWiki

    For rocks without sensitive minerals such as smectites, the porosity and dry, grain, and saturated densities can be derived from the saturated mass, dry mass, and volume (or buoyant weight). These measurements allow calculation of saturated, dry, and grain density as well as porosity and mineral and pore volume by employing Eqs. 3 through 5.

  • Geology - rocks and minerals

    Metamorphic rocks. Metamorphism is the alteration of pre-existing rocks in the solid state due to changes in temperature and pressure. Under increasing temperature and / or pressure existing minerals become unstable and break down to form new minerals. In the case of regional metamorphism the rocks are subjected to tectonic forces which provide the necessary mechanisms for metamorphism.

  • Determination of Specific Surface of Rock Grains by 2D Imaging

    Specific surface is an important parameter for predicting permeability of porous rocks. Many digital methods have been invented to extract the rock properties via imaging such as Micro-CT. With utilizing 3D volume data, this helps in precise investigation; however, it is neither economically efficient nor can be applied for different situations.

  • Chapter 4 Soil and Rock Classification and Logging

    Chapter 4 Soil and Rock Classification and Logging 4.1 Overview ... Soil Constituent Definition Table 4-1 4.2.1 Coarse Grained Soils Coarse grained soils are classified as either a gravel or a sand, depending on whether or not the percentage of the coarse grains are larger or smaller than a 0.19 in. (4.75

  • Chapter 4 Engineering Classification of Rock Materials

    Chapter 4 Engineering Classification of Rock Materials 631.0400 Engineering properties of rock To use rock in engineering applications, certain prop-erties of the rock must be assessed to reasonably pre-dict performance in the as-built condition. The proper-ties of rock fall into two broad classes: rock …